Previously everything lived in an inner class method of
SettingsRobolectricTestRunner. That method has now been turned into
a static method so that it can be called by other runners.
Bug: 62460102
Test: robotests
Change-Id: I6612b1f26404587301c534c8ba60e39d59d6c840
Add TtsSpans to the GMT offset string so that TalkBack knows to
read it out in a more natural way.
Test: cd tests/robotests && mma
Bug: 30042703
Change-Id: Ifa3c540f086472bc3a315b35ba40c9497f17d2d8
